Door-controlling device.



ITED -esfrATEs PATNT orrIoE.

EnwAianWYLnE, or NEW YORK, N. Y., AND CHARLES scnmrcx, or CHICAGO, ILLI- Norsnssrenons To ELEvATon SUPPLY a REPAIR CiirrnNY; A Conronn'rrir or ILLINOIS.

ihoii-Conrnonnrim nEvI'Cn.

Specicaton of Letters Patent.

Patented Mar. 1"7,419i.4.

. -Ba that we, new@ wem and oar meteen win se sa fora-1 in ehe In the preferred embodiment of our inveitibr'i, Figure 1 isa side elevation; Figs. 2 and '3 `are etails, and Fig. 4 is a modicatioi.

l is :a door or ate, such as a slidable door ocatd along an elevator access elevator car. In the embodi- Inient "shown we have proyided automatic A`-r'eaisflo'r closing and lat'chi'n'g the door. inay beof various constructions, but we prefer the arrangement shown in vthe drawings, which comprises an automatic latching toggle operatedbysuitable actuating mechanism such as a spring-actuated dash- Jarot. The 'to'gglje'coinpris'es the levers 3 and 4 pivted I together at 5.' Lever 3 is pivoted atf, ai'ifd lever 4 ispivoted to tli'e door at 6. of lever 4 'is connected to the haha-ieverjabytheunk s. The hand-lever 9 is ivtitglat l0 to the door. When the lever Kis ihrown to the right the toggle will life brd'len and the door opened as indicated indhtitted 'lines'.

dor

'means for automatically vclosing the may bea dashfpjot 22 having a piston head whse stem 2 is pivoted to the lever a indicated.

22% 'isa :spring normally pressing the pis tonvdwiiward.

' 26 is a sniallairfaperture which may be regulated b'ya valve 27.

It will be obvious that when the door is in its open position as indicated in dotted lines in Fig. 1, -the spring will move the door th its closed position.V A suitable latch is provided to hold the door closed and which `comprise two parts which reachesits clo's'edposition. This maybe "a page nieves a and Sin 24611 lever 4, if dsire which causes the arts to remain in 'a position such that th toggle ca nn'oI be b roken hy a force ap lied merely to the oor. 1G indicates the of the door. IVe have provided I'n'eans for automatically sto ping orcheckin'g 4the door against a'n acci en'tal reversemovement during a portion of it's closing movement. This may are normally freelymovaie ast eachother in either direction and which are inoperative to check the door wheii it is moved open from its completely c l's'ed position. In the present embodiment these two 'pr'ts comprise a pivoted stop. or detent 20and a serrated surface 21. The Weight of the detent 20 normally causes it to stand inthe position indi-v cated in Fig. 1. It will be obvious that when the door `i' s moving to its closed position, it will `r'ide over the rack 'and on a reverse movement will engage theteeth and stop the door 'as indicat'edin Fig. 2. J ust before the door c'om'es toits Aclosed position and the automatic lock operates,k the pawl or detent slips oif from the last tooth of the rack and drops into 'the position'indicated in Fig. 1.

As the door is given l'an opening movement from its closed position, the pawlis shifted and again rides freely over the rack as indicated in Fig. 3. It will be obvious that in the embodiment illustrated the pawl is released at each end of the rack land moves tov a position such that it may freely rideover the rack but will stop the door if given an opening movemen'tfrom 'apoint just short of its @closed position.

In the modification shown in Fig. 4, there is provided a surface 2l and a pawl 20a pivoted to the lever. This pawl is, like pawl 20, adapted to engage the surface when the door is given an opening movement short of its closed position, as indicated in dotted lines. Similarly the pawl is released when the door is closed, as indicated in full lines, Vso that atoihitially operates when :the Idoor the pawl freely rides over the surface on the next opening movement. The surface 21 is of such an extent that the pawl is similarly released when the door rapproaches its fully open position, so that the pawl does not prevent the door from freely shllttin'g.

It will be observed that in the embodiment of the invention illustrated the latch which locks the door in its closed position operates to lock the door substantially at the same time as the pawl 2O is released from the rack 21. The pawl is also incapable of checking the opening movement after the latch has been released by breaking the toggle. In tlie embodiment illustrated we have shown the latch so constructed that as the door moves to its closed position the latch is automatically and positively moved to its locked position by the movement of the door. This 1s of an advantage in some instances because it tends to prevent the rebound of the door which sometimes occurs in the use of an ordinary spring-actuated latch on the jamb/ of the door.

, We are aware that various modifications of our invention may be provided without departing from the claims, and wel therefore do not desire to be limited to the particular embodiment shown in the drawings.

Whatwe claim is: c. 1. In combination, a door, automatic means for closing and latching the door, and an automatic stop for 'the door during a portion of its closing movement but inoperative on movement of the door from its closed position. v

2. In combination, a movable door, means automatically stopping said door against an opening movement at different points during a portion of its closing movement and comprising two parts, one of which is moved by the movement of the door, said parts being freely movable past each other and unengageable during t-he closing movement but arranged to engage 40 automatically and only when said door is given an opening movement from a point short of its closed position.

3. In combination, a

movable door,

means automatically stopping said door against an opening movement at different points during a portion of its opening movement and comprising two parts, one of which is moved by the movement of the door, said parts being freely movable past each other and unengageable during the closing movement but arranged to engage automatically and only when said door is given an opening movement from a point short of its closed position, and automatic mechanism for closing and llatching the door. 1

4. A movable door, means automatically stopping `said door against an opening movement at different points during a porso tion of its closing movement and comprising two parts, one of which is moved by the movement of the door, saidv parts being normally-freely movable past each other during a portion of the closing movement but 65 arranged to engage automatically on a redetent being so arranged that when the door is completely closed the detent automatically moves into a position to pass freely by said surface during the opening movement of the door.

6. movable door, an automatic latch for the door in its closed position, a detent, a surface to be engaged thereby, one of said parts being movable across the other by the movement of the door, said detent being arranged to engage said surface to stoD said door against accidental opening during a portion of the closing movement of said door, one of said parts being automatically movable, substantially when said latch operates, into a position such that the detent is inoperative to stop the door in its opening movement. I

7. A movable door, means automatically stopping said door against an opening movement at different points during a portion of its closing movement and comprising two parts, one of which is moved by the movement of the door, said parts being nor- 10g mally freely movable past each other during a portion of the closing movement bu't arranged to engage automatically on a reverse movement of the door, one of said parts being movable, when said door is completely closed, into such relation to the other part that said parts cannot engage during the opening movement.

8. A movable door, means automatically stopping said door against an opening 110 movement at different points during a 'portion of its closing movement and comprising two parts, one of which is moved by the movement of the door, said parts being norius mally freely movable pasteach other during a portion of the closing movement but arranged to engageautomatically on-'a reverse 'movement of the door, one of said parts being movable, when-said door is completely closed, into such relation to the other part 120- that said parts cannot engage during the opening movement, andfa latch for the door positively moved to its latching position by the closing movement of the door.

9. A door, a latch for the door in its closed position, a stop automatically operating to check said door at different points against an opening movement during a por- .tion of its closing movement, said stop being constructed and arranged to be inca- 13o pableJ-of check after said latch l0. In combination, travel to an open.

check 5 position, a

ing the opening movement has been released.

a door adapted position and to a clos device comprising two vent door at or about its closed position. vto Signed at New York city, N. Y. this 31 ed day of January 1913.

EDWARD WYLDE.

parts COpeI'a'tng When t0 pr@ an accidental opening movement of said door when closing, one ofvsaid parts being Witnesses:

freely movable at all times and arranged to. I R.l T. WOLFE,

10 be rendered inee ctive simply by the re- HENRY M. WEISS.

versal of the .direction of movement of said 

